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from xen.sv.util import *
class HTMLBase:
isLeaf = True
def __init__( self ):
pass
def render_POST( self, request ):
self.perform( request )
return self.render_GET( request )
def render_GET( self, request ):
pass
def write_BODY( self, request ):
pass
def write_TOP( self, request ):
pass
def write_BOTTOM( self, request ):
pass
def get_op_method(self, op):
"""Get the method for an operation.
For operation 'foo' looks for 'op_foo'.
op operation name
returns method or None
"""
op_method_name = 'op_' + op
return getattr(self, op_method_name, None)
def perform(self, req):
"""General operation handler for posted operations.
For operation 'foo' looks for a method op_foo and calls
it with op_foo(req). Replies with code 500 if op_foo
is not found.
The method must return a list when req.use_sxp is true
and an HTML string otherwise (or list).
Methods may also return a Deferred (for incomplete processing).
req request
"""
op = req.args.get('op')
if not op is None and len(op) == 1:
op = op[0]
op_method = self.get_op_method(op)
if op_method:
op_method( req )
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